Suppose we want to model the continuous dependent variable y and are considering as explanatory variables the continuous variables x1, x2, x3 and x4. Number of obs = EI 4, 3288) - 211.74 Prob > F 3293 - 0.0000 - 0.2048 R-squared Adj R-aquared- 0.2039 Coef. Std. Err. .003052 00 83361 2116582 .07220 62 1.269609 .0013673 .00137 53 .02092 67 .0034343 .05 98672 2.23 6.06 10.11 21.02 0.026 0.000 0.000 0.000 x2 x4 1 cona I 21.04 0.000 Ais the 954 Confidence Interval of the coefficient of the variable x37 Select one a. It contains the value 0.5. O b. (0.1907: 0.2325). c. It contains the value zero. d. (0.1705 ; 0.2526).